diff --git a/docs/conf.py b/docs/conf.py
index 9b40e43e..82d9c69d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -64,6 +64,7 @@
     "sphinx.ext.autodoc",
     "sphinx.ext.autosectionlabel",
     "sphinx.ext.doctest",
+    "sphinx.ext.graphviz",
     "sphinx.ext.intersphinx",
     "sphinx.ext.mathjax",
     "sphinx.ext.napoleon",
@@ -96,6 +97,7 @@
         ]
     ),
 }
+graphviz_output_format = "svg"
 html_copy_source = True  # needed for download notebook button
 html_favicon = "_static/favicon.ico"
 html_show_copyright = False